What were Saint Cyril’s major achievements?

He co-created the Glagolitic and Cyrillic alphabets, translated Christian texts into Old Church Slavonic, and composed the *Proglas*, the earliest surviving Slavonic poem.

Who did Saint Cyril work with?

He partnered with his brother Saint Methodius as part of the Seven Slavic Saints, under the patronage of the Byzantine Empire and later the Great Moravian rulers.

What is the significance of the Cyrillic script?

Developed from the Glagolitic alphabet, it became the writing system for numerous languages, including Russian, Ukrainian, and Bulgarian, shaping Eastern European culture and identity.

Saint Cyril the Philosopher

Christian missionary to the Slavs (9th c.)

Person human Q351026

Facts

25 properties

Instance of: human
Sex or gender: male^[15]
Date of birth: 827
Date of death: February 14, 869
Place of birth: Thessaloniki
Place of death: Rome
Occupation: translator, missionary, writer, theologian, monk
Religion or worldview: Eastern Orthodoxy^[14]
Notable work: Proglas^[11]
Sibling: Methodius of Thessaloniki
Languages spoken, written or signed: Old Church Slavonic, Ancient Greek
Canonization status: saint^[16]
Copyright status as a creator: copyrights on works have expired
Described by source: Vlastenský slovník historický, Jewish Encyclopedia of Brockhaus and Efron, The Nuttall Encyclopædia, Slavorum Apostoli, The Life of Constantine^[23]
Different from: Cyril of Alexandria
Feast day: February 14^[21]
Given name: Kirill, Kyrillos, Cyril^[17]^[18]^[19]
Member of: Seven Slavic Saints, Saints Cyril and Methodius^[12]^[13]
P14483: p/papa-constantino
P14536: 350623
P14585: 51099
P14608: 118523120
Partner in business or sport: Methodius of Thessaloniki^[22]
Place of burial: Basilica of San Clemente^[10]

Show all 25 facts +1

Pseudonym: Filozof^[20]

🏷️ Also known as

en Cyril en Saint Cyril en Saint Cyril the Philosopher cs Konstantin-Kiril cs Konstantin Filosof cs Konstantin Cyril cs Cyril Filosof cs svatý Konstantin Filosof cs svatý Cyril cs Filozof cs Cyril cs sv. Cyril cs Kyrillos da Sankt Kyrillos de Kyrill de Hl. Kyrill de Heiliger Kyrill de Cyrill von Saloniki de Kyrill von Saloniki el Άγιος Κύριλλος

🔖 Identifiers · 77

ISNI: 0000000122763461
VIAF cluster ID: 10637017
Library of Congress authority ID: n50078539
GND ID: 118523120
Image (Wikimedia Commons): Icon of Saint Cyril, The Holy Mount of Grabarka.jpg ↗
AbART person ID: 78984
Angelicum ID: 33305
ArchINFORM keyword ID: 3004
BHCL UUID: 408feb30-3d86-4c06-b9ae-ff4502af7a65
Biblioteca Iglesia Nacional Española en Roma ID: 52891
Bibliothèque nationale de France ID: 11947479r
Biblissima authority ID: Sumatra

Show all 77 identifiers +65

BioLexSOE ID: 1224
Biographical Dictionary of the Czech Lands ID: 44255
CANTIC ID: 981058614744906706
CERL Thesaurus ID: cnp00394532, cnp01319101
DDB person (GND) ID: 118523120
De Agostini ID: Cirillo+(Costantino),+detto+il+Filòsofo
Deutsche Biographie (GND) ID: 118523120
Diamond Catalog ID for persons and organisations: 46071
E-archiv.li ID: 29166
EBAF authority ID: 84090
Encyclopædia Britannica Online ID: biography/Saint-Cyril
FAST ID: 1814699
Goodreads character ID: 976586
Google Knowledge Graph ID: /g/121vqx37
Gran Enciclopèdia Catalana ID: ciril-de-tessalonica
Great Russian Encyclopedia Online ID (2017): 2066853
Great Russian Encyclopedia portal ID: kirill-i-mefodii-86a52f
Hill Museum & Manuscript Library ID: person/671807141670
IdRef ID: 02743222X
Image Archive, Herder Institute: Saint Cyril the Philosopher
IxTheo authority ID: 079324673
Jewish Encyclopedia ID: 4827
Kalliope-Verbund (GND) ID: 118523120
Larousse ID: personnage/saint_Cyrille/115388
Libraries Australia ID: 36224597
Library of the University of Santiago de Compostela authority ID: 981013405635907712
Libris-URI: 64jlld1q1mrs31j
Museum-digital ID: 172485
NE.se ID: kyrillos
NL CR AUT ID: jn20000700942
NLA Trove people ID: 1232545
NLP ID: a0000001181706
NUKAT ID: n98041649
National Library of Greece ID: 262567, 46302
National Library of Israel J9U ID: 987007260086105171
National Library of Latvia ID: 000158172
National Library of Poland MMS ID: 9810537778205606
National Library of Spain SpMaBN ID (BNE v1.0): XX875349
National Virtual Library of India ID: 313011
Nationale Thesaurus voor Auteursnamen ID: 070634467
Online PWN Encyclopedia ID: 3888848
Open Library ID: OL298345A, OL8779994A
OpenMLOL author ID: 415667
PACTOLS thesaurus ID: pcrt3wXWo4LzL7
Parsifal cluster ID: 20757
Pontificia Università della Santa Croce ID: 20436
Provenio UUID: 60ab25ae-e242-4cf1-aa6f-e63f38836d8e
SBN author ID: CFIV173273
SELIBR ID: 180292
SK cinema authority ID: 0052573
SNK ID: 148970
SVKKL authority ID: 0202797-Konstantin-827869
Santiebeati ID: 22800
Slovenska biografija ID: 1023590
UOM ID: 53411
Unione Romana Biblioteche Scientifiche ID: 8283
University of Barcelona authority ID: 981058614744906706
University of Barcelona authority ID (former scheme): a1191714
Vatican Library ID (former scheme): ADV12337164
Vatican Library VcBA ID: 495/57749
Wellcome Collection concept ID: bfzu7zm2
World History Encyclopedia ID: Saint_Cyril
WorldCat Entities ID: E39PBJyx9W9mCgvq8xPbG9VKVC
Yale LUX ID: person/75166057-082c-4145-9eec-b08d91963433
Ökumenisches Heiligenlexikon ID: C/Cyrillus_von_Saloniki.htm

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections

Described by source 4

Slavorum Apostoli, The Nuttall Encyclopædia, Jewish Encyclopedia of Brockhaus and Efron, The Life of Constantine

Occupation 3

writer, missionary, translator

Languages spoken, written or signed 2

Ancient Greek, Old Church Slavonic

Named after 2

Cyrillic script, Kyrylo Budanov

Students 2

Clement of Ohrid, Saint Naum

← Main subject 2

Grande munus, The Life of Constantine

Belongs to 1

Saints Cyril and Methodius

Canonization status 1

saint

Different from 1

Cyril of Alexandria

Feast day 1

February 14

Given name 1

Kirill

Image Archive, Herder Institute 1

Saint Cyril the Philosopher

Instance of 1

human

Member of 1

Seven Slavic Saints

Notable work 1

Proglas

Part of 1

Saints Cyril and Methodius

Partner in business or sport 1

Methodius of Thessaloniki

Place of birth 1

Thessaloniki

Place of burial 1

Basilica of San Clemente

Place of death 1

Rome

Religion or worldview 1

Eastern Orthodoxy

Sex or gender 1

male

Sibling 1

Methodius of Thessaloniki

Siblings 1

Methodius of Thessaloniki

Works by author 1

Proglas

← Characters 1

Dictionary of the Khazars

← FactGrid item ID 1

Mozoncillo

← Image Archive, Herder Institute 1

Saint Cyril the Philosopher

← Partner in business or sport 1

Methodius of Thessaloniki

← Patron saint 1

Eparchy of Košice

Press Enter · cited answer in seconds

Summary

Born in Thessaloniki^[1], he… he was born on January 1, 827^[2]. He passed away in Rome^[3]. He died on February 14, 869^[4]. He worked as a translator^[5], missionary^[6], writer^[7], theologian^[8], and monk^[9].

Body

Works and Contributions

Things named for him include Cyrillic script^[24], a writing system^[25], founded in 0870^[26] and Kyrylo Budanov^[27], an intelligence officer^[28], b. 1986^[29], of Ukraine^[30], awarded the Order for Courage 1st Class of Ukraine^[31], specialised in military intelligence^[32].

Why It Matters

Works attributed to him include Proglas^[33], a written work^[34], founded in 0900^[35]. Entities named for him include Cyrillic script^[24], a writing system^[25], founded in 0870^[26] and Kyrylo Budanov^[27], an intelligence officer^[28], b. 1986^[29], of Ukraine^[30], awarded the Order for Courage 1st Class of Ukraine^[31], specialised in military intelligence^[32].

FAQs

Where was Saint Cyril the Philosopher born?

Saint Cyril the Philosopher's place of birth was Thessaloniki^[1].

Where did Saint Cyril the Philosopher die?

Saint Cyril the Philosopher passed away in Rome^[3].

What did Saint Cyril the Philosopher do for work?

Saint Cyril the Philosopher worked as translator^[5], missionary^[6], writer^[7], theologian^[8], and monk^[9].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

[1] ↑ Saint Cyril the Philosopher — place of birth (P19): Thessaloniki. wikidata.org.
[3] ↑ Saint Cyril the Philosopher — place of death (P20): Rome. Integrated Authority File. Retrieved 2014-12-31. wikidata.org.
[15] ↑ Saint Cyril the Philosopher — sex or gender (P21): male. wikidata.org.
[5] ↑ Saint Cyril the Philosopher — occupation (P106): translator. wikidata.org.
[6] ↑ Saint Cyril the Philosopher — occupation (P106): missionary. The Fine Art Archive. Retrieved 2021-04-01. wikidata.org.
[7] ↑ Saint Cyril the Philosopher — occupation (P106): writer. wikidata.org.
[8] ↑ Saint Cyril the Philosopher — occupation (P106): theologian. Integrated Authority File. Retrieved 2026-04-20. wikidata.org.
[9] ↑ Saint Cyril the Philosopher — occupation (P106): monk. Integrated Authority File. Retrieved 2026-04-20. wikidata.org.
[10] ↑ Saint Cyril the Philosopher — place of burial (P119): Basilica of San Clemente. wikidata.org.
[14] ↑ Saint Cyril the Philosopher — religion or worldview (P140): Eastern Orthodoxy. wikidata.org.
[16] ↑ Saint Cyril the Philosopher — canonization status (P411): saint. wikidata.org.
[12] ↑ Saint Cyril the Philosopher — member of (P463): Seven Slavic Saints. wikidata.org.
[13] ↑ Saint Cyril the Philosopher — member of (P463): Saints Cyril and Methodius. wikidata.org.
[2] ↑ Saint Cyril the Philosopher — date of birth (P569): January 1, 827. Catalogue of the Library of the Pontifical University of Saint Thomas Aquinas. Retrieved 2017-10-09. wikidata.org.
[4] ↑ Saint Cyril the Philosopher — date of death (P570): February 14, 869. wikidata.org.
[17] ↑ Saint Cyril the Philosopher — given name (P735): Kirill. wikidata.org.
[18] ↑ Saint Cyril the Philosopher — given name (P735): Kyrillos. wikidata.org.
[19] ↑ Saint Cyril the Philosopher — given name (P735): Cyril. wikidata.org.
[20] ↑ Saint Cyril the Philosopher — pseudonym (P742): Filozof. Czech National Authority Database. Retrieved 2020-08-30. wikidata.org.
[11] ↑ Saint Cyril the Philosopher — notable work (P800): Proglas. wikidata.org.
[21] ↑ Saint Cyril the Philosopher — feast day (P841): February 14. wikidata.org.
[22] ↑ Saint Cyril the Philosopher — partner in business or sport (P1327): Methodius of Thessaloniki. wikidata.org.
[23] ↑ Saint Cyril the Philosopher — described by source (P1343): Vlastenský slovník historický. wikidata.org.

Inverse relationships (entities pointing at this one)

Inline context (facts about related entities)

[34] ↑ Proglas — P31: written work. Wikidata. wikidata.org. → on this site
[35] ↑ Proglas — P571: 900. Wikidata. wikidata.org. → on this site
[25] ↑ Cyrillic script — P31: writing system. Wikidata. wikidata.org. → on this site
[26] ↑ Cyrillic script — P571: 870. Wikidata. wikidata.org. → on this site
[28] ↑ Kyrylo Budanov — P106: intelligence officer. Wikidata. wikidata.org. → on this site
[29] ↑ Kyrylo Budanov — P569: b. 1986. Wikidata. wikidata.org. → on this site
[30] ↑ Kyrylo Budanov — P27: Ukraine. Wikidata. wikidata.org. → on this site
[31] ↑ Kyrylo Budanov — P166: Order for Courage 1st Class of Ukraine. Wikidata. wikidata.org. → on this site
[32] ↑ Kyrylo Budanov — P101: military intelligence. Wikidata. wikidata.org. → on this site

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA

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MLA

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BibTeX

@misc{4ortxyz_saint-cyril-the-philosopher_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Saint Cyril the Philosopher}}, year = {2026}, url = {https://4ort.xyz/entity/saint-cyril-the-philosopher}, note = {Accessed: 2026-11-03}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Saint Cyril the Philosopher — https://4ort.xyz/entity/saint-cyril-the-philosopher (retrieved 2026-11-03)

Canonical URL: https://4ort.xyz/entity/saint-cyril-the-philosopher · Last refreshed: November 3, 2026

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

28d ago · Mmen6 · 2026-10-06 view diff on Wikidata ↗

Sitelink count → 31

Wikipedia languages → ['bg', 'commons', 'cs', 'cu', 'cy', 'da', 'de', 'en', 'fr', 'hu', 'ja', 'ko', 'l

Gran Enciclopèdia Catalana ID → ciril-de-tessalonica

Claims rich → —

"/* wbsetclaim-create:1||1 */ Gran Enciclopèdia Catalana ID: ciril-de-tessalonica, Matched to [[:toollabs:mix-n-match/#/entry/327078013|Ciril de Tessalònica (#327078013)]] in [[:toollabs:mix-n-match/#/"
8w ago · Dodro · 2026-09-02 view diff on Wikidata ↗

Library of the University of Santiago de Compostela authority ID → 981013405635907712

"/* wbsetclaim-create:2||1 */ Library of the University of Santiago de Compostela authority ID: 981013405635907712"
12w ago · Epìdosis · 2026-08-07 view diff on Wikidata ↗

Part of → —

Member of → Seven Slavic Saints, Saints Cyril and Methodius

"/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/46011|batch #46011]]: switch P361 to P463 for humans"
14w ago · Pierrotrgr · 2026-07-24 view diff on Wikidata ↗

Biblissima authority ID → Sumatra

"/* wbsetclaim-create:2||1 */ Biblissima authority ID: Q3492, Import ID Biblissima V3 ([[:toollabs:editgroups/b/OR/a6710164cdc|details]])"
17w ago · Printstream · 2026-07-04 view diff on Wikidata ↗

P14608 → 118523120

"/* wbcreateclaim-create:1| */ P14608: 118523120, #quickstatements; #temporary_batch_1783130387391"
17w ago · Printstream · 2026-07-01 view diff on Wikidata ↗

P14585 → 51099

"/* wbcreateclaim-create:1| */ P14585: 51099, #quickstatements; #temporary_batch_1782930557898"
18w ago · Printstream · 2026-06-26 view diff on Wikidata ↗

SVKKL authority ID → 0202797-Konstantin-827869

P14536 → 350623

"/* wbcreateclaim-create:1| */ P14536: 350623, #quickstatements; #temporary_batch_1782462304762"
22w ago · RVA2869 · 2026-05-29 view diff on Wikidata ↗

Described by source → Vlastenský slovník historický, Jewish Encyclopedia of Brockhaus and Efron, The Nuttall Encyclopædia +2

"/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/33786|batch #33786]]: Remove redundant described by source (P1343) - ID P14483 is present."
22w ago · XeNivalys · 2026-05-27 view diff on Wikidata ↗

Sex or gender → male

Notable work → —

Great Russian Encyclopedia Online ID (2017) → 2066853

CERL Thesaurus ID → cnp00394532, cnp01319101

+ 24 other properties edited (see Wikidata diff for full list)

"/* wbcreateclaim-create:1| */ P14483: p/papa-constantino, #quickstatements; #temporary_batch_1779859433286"

Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.

Saint Cyril the Philosopher

Facts

Summary

Body

Works and Contributions

Why It Matters

FAQs

Where was Saint Cyril the Philosopher born?

Where did Saint Cyril the Philosopher die?

What did Saint Cyril the Philosopher do for work?

Related Entities

References

Direct Wikidata claims

Inverse relationships (entities pointing at this one)

Inline context (facts about related entities)

📑 Cite this page

Edit History